British rockers DEF LEPPARD are currently putting together a live album from their 2009 tour which may see new material added as well. Due for release in 2011, singer Joe Elliott explains the process: "In the old days, a band would call in the Rolling Stones Mobile and record a gig and hope that it worked well.In this day in age, you record every show into a hard drive. So we've got every show from the backed up on to three or four hard drives. So we have the unenviable task of having to listen to 50 versions of every song we played."